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Hydrogen-Containing Na3HTi1–xMnxF8 Narrow-Band Phosphor for Light-Emitting Diodes AITranslate

MuHuai Fang; TsunHsiung Yang; Tadeusz Lesniewski; Chi Lee; Sebastian Mahlik; Marek Grinberg; Vanessa K. Peterson; Christophe Didier; Wei Kong Pang; Chaochin Su; RuShi Liu;
National Taiwan University; National Taipei University of Technology; Gdańsk University; National Taiwan University; Gdańsk University; Gdańsk University; University of Wollongong; University of Wollongong; University of Wollongong; National Taipei University of Technology; National Taipei University of Technology
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Abstract AITranslate

We synthesize the phosphor Na3HTi1–xMnxF8 (Na3HTiF8:Mn4+) material series using a coprecipitation method. We determine the complete phase and crystallographic structure of the Na3HTiF8 series end-member, including the determination of the H atoms at the 4b (0, 1/2, 0) crystallographic site within the Cmcm space group symmetry structure, resulting in a quantum efficiency of ∼44%, which is comparative to the Na2SiF6:Mn4+ phosphor materials. We successfully model the luminescent properties of the Na3HTi1–xMnxF8 material series, including temperature and time-dependent photoluminescence, providing a good prediction of the decay properties at low and high temperature and revealing the existence of Mn5+ during the ionization process. Notably, LED package data indicates that the Na3HTi1–xMnxF8 material series could be a promising candidate for high-level and back-lighting devices. This research reveals the role that hydrogen plays in determining fluoride phosphor structure and properties, revealing a new path for the synthesis of fluoride phosphors.

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DOI：https://doi.org/10.1021/acsenergylett.8b02307

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Citation Information:

We synthesize the phosphor Na3HTi1–xMnxF8 (Na3HTiF8:Mn4+) material series using a coprecipitation method. We determine the complete phase and crystallographic structure of the Na3HTiF8 series end-member, including the determination of the H atoms at the 4b (0, 1/2, 0) crystallographic site within the Cmcm space group symmetry structure, resulting in a quantum efficiency of ∼44%, which is comparative to the Na2SiF6:Mn4+ phosphor materials. We successfully model the luminescent properties of the Na3HTi1–xMnxF8 material series, including temperature and time-dependent photoluminescence, providing a good prediction of the decay properties at low and high temperature and revealing the existence of Mn5+ during the ionization process. Notably, LED package data indicates that the Na3HTi1–xMnxF8 material series could be a promising candidate for high-level and back-lighting devices. This research reveals the role that hydrogen plays in determining fluoride phosphor structure and properties, revealing a new path for the synthesis of fluoride phosphors.

quote

GB/T 7714-2015 [1] MuHuai Fang, TsunHsiung Yang, Tadeusz Lesniewski, et al. ACS Energy Letters, 2019(4). DOI:10.1021/acsenergylett.8b02307.
MLA [1] MuHuai Fang, et al., ACS Energy Letters, no. 4, 2019, https://doi.org/10.1021/acsenergylett.8b02307.
APA [1] MuHuai Fang, TsunHsiung Yang, Tadeusz Lesniewski, Chi Lee, Sebastian Mahlik, Marek Grinberg, Vanessa K. Peterson, Christophe Didier, Wei Kong Pang, Chaochin Su, & RuShi Liu. (2019). ACS Energy Letters(4). https://doi.org/10.1021/acsenergylett.8b02307
IEEE [1] MuHuai Fang, TsunHsiung Yang, Tadeusz Lesniewski, Chi Lee, Sebastian Mahlik, Marek Grinberg, Vanessa K. Peterson, Christophe Didier, Wei Kong Pang, Chaochin Su, and RuShi Liu, ACS Energy Letters, no. 4, 2019, doi: 10.1021/acsenergylett.8b02307.